Functional prototype

core/tools/fps_label.gd

@@ -0,0 +1,5 @@
+extends Label
+
+
+func _process(delta):
+	text = str(Engine.get_frames_per_second()) + " FPS"

core/tools/fps_label.tscn

@@ -0,0 +1,21 @@
+[gd_scene load_steps=2 format=3 uid="uid://c6w6axh4l4w8d"]
+
+[ext_resource type="Script" path="res://core/tools/fps_label.gd" id="1_i0we7"]
+
+[node name="MarginContainer" type="MarginContainer"]
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -69.0
+offset_bottom = 40.0
+grow_horizontal = 0
+theme_override_constants/margin_top = 10
+theme_override_constants/margin_right = 20
+
+[node name="FPSLabel" type="Label" parent="."]
+layout_mode = 2
+theme_override_font_sizes/font_size = 20
+text = "120 fps"
+horizontal_alignment = 1
+vertical_alignment = 1
+script = ExtResource("1_i0we7")